August kroll



(No Model.) v

.- f 'A.. KROLL.

' PUMP.

No. 497,670. "Patented May 16, 1893.

yaw

' UNITED STATES PATENT OFFICE.

AUGUST KROLL, OF LEOPOLIS, WVISCQNSIN.

PUIVlP.

SPECIFICATION forming part of Letters Patent No. 497,670, dated May. 16,1893.

Application filed December 6, 1892- Serial No, 454,259. (No model.) 7

To all whom it may concern.-

Be it known that 1, AUGUST KROLL, a citizen of the United States,residing at Leopolis, in the county of Shawano, State of Wisconsin, haveinvented certain new and useful Improvements in Pumps, of which thefollowing is a specification, reference being bad therein to theaccompanying drawings.

This invention relates to certain new and useful improvements in pumpsand more particularly to the operating means, and .it has for itsobjects among others to provide a simple yet cheap and efficientmechanism for operating a pump by which ease of movement is secured andwhich may be operated by a weak person or boy as well as by a strongerperson. The operating leveris journaled upon a horizontal axis and isprovided with adj ustable weights by which the leverage may be varied asoccasion may require, and upon the axis is adjustably supported orattached a crank arm which is pivotally connected with the pump rod,which latter reciprocates between and is guided by balls or rollerswhich are mounted for free vertical play or movement within specified orfixed limits. The weights upon the operating handle or lever may beadjustably mounted thereon, or they may be hollow and adapted to befilled with or receive any suitable filling the quantity of which can beincreased or diminished as may be desired to vary the weight. Theweights on the handle or lever are arranged upon opposite sides of thepivot thereof and aid materially in the operation of pumping.

Other objects and advantages of the invention will hereinafter appearand the novel features thereof will be specifically defined by theappended claim.

The invention is clearly illustrated in the accompanying drawings,which, with the letters of reference marked thereon, form a part of thisspecification, and in which- Figure l is a side elevation of myimprovements. Fig. 2 is a view looking at right angles to Fig. 1. Fig. 3is a detail on an enlarged scale, with portionsin section and parts inside elevation,showing the guiding rollers between which the pump rodpasses.

Like letters of reference indicate like parts throughout the severalviews in which they appear.

Referring now to the details of the drawings by letter, A designates apump stock and .A' its spout and B the pump rod arranged to reciprocatewithin the stock, upon which latter is mounted, or it may be integraltherewith, the lugs or ears I) provided with vertical slots 1) as seenin Figs. 1 and 3, in which slots ride loosely the pintles or axles c ofthe rollers O which are preferably grooved as seen in Fig. 2 and betweenwhich the pump rod is designed to work; these rollers,it will beobserved, have a limited free vertical play between the ears or lugs andthus are not so liable to become inoperative as 'if they were upon fixedpintles.

D is an upright or standard rising from the pump stock and supportedthereon in any suitable manner. This standard has atits upper end ahorizontal tubular portion 11 in which is supported the shaft or journalE which at one end carries the handle or lever F which is held thereonin any suitable mannor, and this lever is provided with a suitabledevice as a hand-holdfas seen in Fig. 2 by which it may be moved. At thelower end of this lever or handle is affixed a weight Gand near theupper end is another weight H; these weights, one or both, may be adjustably mounted upon the lever or handle in any suit able manner, as bya clip or clasp g and set screw g as seen at the upper end of the leverin Fig. 2, or the weights may be hollow and provided with a suitableopening closed bya cap or analogous device it by which they may befilled with any suitable material the quantity of which may be varied tovary the weight for different leverage when occasion may require.

A suitable oil cup I may be provided upon the tubular portion 01 as seenin Fig. 2 so that the same may be lubricated.

To the upper end of the pump rod is pivotally connected as at j in anysuitable manner, the rod or link J the upper end of which. is connectedwith the crank pin K on the crank arm L which has a longitudinal slot 70as seen best in Fig. 1 through which passes the end of the journal Ewhich is screw threaded and receives anut M as seen in Figs. 1 and 2, asuitable washer N being employed as seen in said views. .The crank arm Lhas upon its inner face a longitudinal groove as seen by dotted lines inFig. 2, in which is fitted a piece Ofast on the journal and which aidsin keeping the parts in their proper relative position.

The length of stroke of the pump rod can be readily varied by adjustmentof the crank arm by means of the nut upon the end of the journal.

The operatiou'will be readily understood from the foregoing descriptionwhen taken in connection with the annexed'drawings, and a furtherdetailed description thereof is not deemed necessary.

What I claim as new is- The combination with the pump stock, standardand pump rod, of the tubular portion on the standard, the journaltherein, the

lever on one end of the journal and having? AUGUST KROLL. Witnesses:

C. E; KUBENROLL, JOHN SCHMAHL.

